Adjustable reamer, tap, and the like.



F. PRICE. ADJUSTABLE REAMER, TAP, AND THE LIKE. APPLIOATION III-ED JULY 5, 1912 2 SHEETS-SHEET 1.

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Patented May 20, 1913.

P. PRICE. ADJUSTABLE BEAMER, TAP, AND THE LIKE.

APPLICATION FILED mus, 1912. 1,062, 1 14;. Patented May 20, 1913.

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. 5 'clirin UNITED s'TArEs PATENT OFFICE.

FREDERICK BEIGE, or

COVENTRY, ENGLAND.

ADJUSTABLE nnamnn, TA'P, Ann THE LIKE.

Loser-re Specification of Letters Patent. V

T ullwlwm z'tmay concern:

Be it'known that I, FREDERICK Pinon, a Britishsubject, residing at 41 Spencer avenue,.Covent'ry, in the county of Warwick 5 shire and country or England, have invented a new and useful Improvement in Adjustable Reamers, Taps, and the Like, of which the following is a specification/ My invention relates to improvements in adjustable reaniers, taps, and the like, and is particularly applicable toy that type of reamer, ortap, in which the blades, .or cuttin members, are separated from' thei'holder or ody,,'but capable of being adjusted for size, and locked 1n position in the said holder orbody.- R The object of myi'nvention is to provide means whereby the'Iblades, or cutting members, of an adjustable reamer, or tap, being position in the holder, or body, of such reamer, or tap. I attain this object by the construction of said reamers ortaps as'illustrated in the accompanying drawings, in which- Figure 1 shows a section-thro'u h an as sembled reamer (ofthe hand an machine type) Fig. 2 an end view of the same, with a part of the securing washer cut away; and

Fig. 3 an outside elevation. Fig. 4 shows a section through an assembled reamer oi modified form (of the shell type) Fig. 5 an 'end yiew of the same, with a art of the secollar cut away, and ig.' 6 an outside e evation. 4 In all of'these several views, a is the body, b the blades, 0 and d back nuts, e the lock- -ing wedges, f the securinicollar, g the lock- 4 in screw, and s the shan the modified form f is the securing collar and g is the lockingnut. The body a is slotted. to receive the blades I b (which may be "of varyin numbers a0- cording to the size of the tool the slots being tapered I deeper toward the back, or shank end, and theblades b are a good sliding fit in said slots.j 'At the front end of the body a taper recess is cut, at. the bottom and in the center of which a hole-is drilled andtapped for receiving the locking screw 9 (-in the case of solid hand and machine reamers, Figs'gl, 2 and 3). Andin the'case of shell reamers, Figs. 4 5 and 6, a taper recess iscut in theE'end of the body, leav n a nipplesolidiwith the same, onto whic perfectly flat on their two sides and bottomedges, may be securely locked in a desired v atented'May 20, 1913."1 Application fi led July 5,1912, seriama'zoasss. 'J' i" is screwedthe, locking nut at. back" nuts 0 and d fit the screw-threadedpart or I the body at the back, suitable. means-being provided for screwingthem. up as require The front nut, d is coned at itsifront end to fit theends of'theblades, nut'c being forth'e pur ose oilockinf nut, d. E 8

e blades aresiinply flatpieces of steel, tapered oat-heir edges to suit theslot's '-1n the body, and beveled at their back' ends to corresp'ond with the back nut d. They are ground on their outer edges, after har= deni g, when in position. The locki wedges e areformed by making ,a cone shaped sleeve to fit the taper recess in the front of the body, and parting many pieces as there are slots in the body,

. by passing a saw through said sleeve of the same width as the slots, thereb forming. small-wedges which 'fit accurate y between theblades.

g The shanks s in the case of hand; or mait into as chine reamers, Figs. 1, 2 and 3 (shell ream ers, Figs. 4, 5 and 6,'being' for .use with boring bars do not require shanks) are made separately and easily detachable, so that they maybe chan ed at will, and the same reamer used for eit er hand or machine reaming,

gcceirding to the shank on to which it is In order to assemble the reamer from the various details here described, the blades 6 are fitted into the body a and driven back against the back'nuts 0 add which are run back on the thread as far as possible. The Wedge pieces 0 are their-put into position 7 or collar f tightened by the locking screw 9 or locking nut g forces the wedges 0 down the cone, whereupon they grip the sides of the blades b and force them in a downward and backward direct-ion against the bottom of the slots and the back nuts 0 and d, locking them in position.

When it is desired to adjust the'blades,

. between the blades, and thesecuring washer the locking'screw g or locking nut g (as the 7 case may be)" is slacked back slightly, the blades 12 are driven forward a httle more than the desired amount, and the back nuts 0 and (i brought up to position. The blades 6 arethen driven downward and back hard 'on to the back nut d and re-locked by tightening-the screw 9 or-nut g (as the case may be). They are then ground, on the diameter and front :of the blades, and backed off, and the tool is ready for use. Adjustable cutting edgeS only are ground inthe body between the-blades, and means taps may also be made in this fox-1-, out when so made the fronts and faces of the after adjust-- ment. I

I claim In anadjusta'ble reamer, or ta the combination of a bod'y haviilg separate him with Wedge pieces fitting mto a taper 1.1. a

FREDERICK PRICE FRANK EDGE, JAMES ALEXANDER PARK.

Ccpies of this patent may be obtained fer five gents each, by addressing the flommissioner otPaltentu.

Washington I0. 01? I 0 33 111 we-Gges into the taper recess 10' 

